What are these?!?!?

[CourtNjoeZreef]

So I have these things growing apparently from what I can tell on all surfaces of the sump.

 

[Timfish]

Looks like small pineapple sponges, beneficial filter feeders. They'll get ~1/2" long.

 

[CourtNjoeZreef]

Looks like small pineapple sponges, beneficial filter feeders. They'll get ~1/2" long.

REALLY?!?!?! oh thank goodness. i thought i was dealing with some kind of parasite